www.robertsimaging.com is a retailer in Indianapolis that has been around for a long, long time and they are as good as it gets in Indy.

Check out their used Nikon Digital SLR. They have a two or three D40X cameras at pretty reasonable prices.

I would offer this advice. Pick the brand you want to stick with for a long time. After you buy the camera, you'll start buying lenses to fit it. After a while you'll have a considerable amount of money wrapped up in a brand. It's not a good thing to figure out you want a different brand AFTER you pretty deep in to another.